The bundle module contains tools for modifying the contents of
(dyn *syspath*) and providing a common interface for installing
packages (called "bundles").
The functions are:
* bundle/install
* bundle/uninstall
* bundle/manifest
* bundle/do-hook
* bundle/list
* bundle/add-file
* bundle/add-directory
A bundle is a directory that contains any number of source files and
other extra files, as well as a directory "hooks/", which contains a
flat listing of janet scripts. This version of the bundle module is not
responsible for building C source modules or for downloading files over
the network.
Basic frontend being prototyped in examples/sysir/frontend.janet. Still
a lot of work needs to be done here, and some of this code will
eventually move to C most likely, but this is a good way to better
exercise our backend.
Type inference - at the very least _forward_ inference, is the most
needed change here. While one could do this in the compiler
frontend, doing so in sysir/asm is not so much of an issue. "Inference"
here means inserting "bind" instructions when there is only a single
type that will work correctly.
In the edge-trigger mode before this change, if a socket
receives 2 connections before one can be handled, then only a single
connection is handle and 1 connection will never be handled in some
cases. Reverting to level-trigger mode makes this impossible.
Properly set read_fiber and write_fiber to NULL when unused.
This was causing extra listening in the poll implemenation leading to
busy loops where a read was accidentally listening for POLLOUT.
